Sorry I just noticed your note. I usually get about 8,5 - 13 mpg. I recommend Lucas Upper Cylinder lubricant - about 1 cup per 100 gal not what they recommend.
I find the generator and Jake brake work better with the additive.
Hi we just bought a 2007 Empress Elite drove from Kelowna to Calgary got 5.8 mpg avg thought it would be better is this typical or do I need to have it checked out, first time driving a DP. owned a gas rig WH 22 for 9 years averaged 7-8 mpg.